## Guess the Number

Students will develop skills in halving and estimation.
http://www.amblesideprimary.com/ambleweb/mentalmaths/guessthenumber.html

## Number Bond Machines

Students can test their knowledge of number bonds for 5, 10 and 100.
http://www.amblesideprimary.com/ambleweb/mentalmaths/numberbond.html

## Cloud Click

An engaging game that reinforces multiplication facts. The student can choose which number to practise, or can choose random number facts. Choose Cloud Click.
http://www.echalk.co.uk/

## Displacement-Time Graphs

Choose the Displacement-Time Graph Game. Move the car to draw the displacement-time graph. Once you understand the connection between the movement of the car and its related graph, test yourself by playing one of the games.
http://www.echalk.co.uk/

A neat Geogebra applet to interactively illustrate vector addition. From The Lawrenceville School Math Department Website.
http://mathplotter.lawrenceville.org/mathplotter/mathPage/vectors.htm

## Sine and Cosine Functions

A lovely Geogebra applet that graphically shows how the sine and cosine functions are generated from the unit circle. From The Lawrenceville School Mathematics Department Web Resources.
http://mathplotter.lawrenceville.org/mathplotter/mathPage/sine.htm

## Make 24

You are given 4 cards, the operations +, -, x, / and brackets. Your task is to construct an expression using all 4 cards that evaluates to 24. Oh, and you have to find an answer in less than 1 minute. Initially this task is can be very challenging, but the more problems you try, the easier they become. From Cool Maths.
http://www.coolmath-games.com/0-make24/index.html

## Animation Puzzle

An animated jigsaw puzzle from Cool Maths! And it is really, really cool - I couldn't leave the page until I had solved it.
http://www.coolmath-games.com/0-animationpuzzle/index.html

## The Super Sequencer

Count forwards and backwards with the Super Sequencer, including decimals and negative numbers. There are 3 speeds - slow, medium and fast. From Ambleside Primary.
http://www.amblesideprimary.com/ambleweb/mentalmaths/supersequencer.html

The Multi Sequencer displays two sequences simultaneously. Click on [Instructions] and then [More] to get some ideas how you might use this.
http://www.amblesideprimary.com/ambleweb/mentalmaths/multisequencer.html

## Defractator

Explore the relationship between fractions and decimals with your class. Click the IDEAS button for some great ideas. From Ambleside Primary.
http://www.amblesideprimary.com/ambleweb/mentalmaths/fracto.html